JPH05231144A - Waste heat recovering device for engine - Google Patents
Waste heat recovering device for engineInfo
- Publication number
- JPH05231144A JPH05231144A JP4037769A JP3776992A JPH05231144A JP H05231144 A JPH05231144 A JP H05231144A JP 4037769 A JP4037769 A JP 4037769A JP 3776992 A JP3776992 A JP 3776992A JP H05231144 A JPH05231144 A JP H05231144A
- Authority
- JP
- Japan
- Prior art keywords
- water
- pipe
- cooling water
- engine
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002918 waste heat Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 115
- 239000000498 cooling water Substances 0.000 claims abstract description 81
- 239000007789 gas Substances 0.000 claims abstract description 65
- 238000011084 recovery Methods 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自家発電等の施設用エ
ンジンの排気ガス配管から廃熱を回収する廃熱回収装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste heat recovery device for recovering waste heat from an exhaust gas pipe of an engine for facilities such as private power generation.
【０００２】[0002]
【従来の技術】従来より、この種エンジンの廃熱回収装
置として、例えば実開昭５７−１８２２３８号公報に開
示されるように、エンジンの冷却水配管及び排気ガス配
管をそれぞれ給湯装置等の湯水利用部に接続された熱交
換部に介在配置して、この両配管から廃熱を回収するよ
うにしたものは知られている。2. Description of the Related Art Conventionally, as a waste heat recovery device for this type of engine, as disclosed in, for example, Japanese Utility Model Application Laid-Open No. 182238/1982, the cooling water pipe and the exhaust gas pipe of the engine are respectively hot and cold water such as a water heater. It is known that a heat exchange section connected to a utilization section is interposed so as to recover waste heat from both of these pipes.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記排気ガ
ス配管は、冷却水配管に比して大径のものであるため、
この排気ガス配管をエンジン設置個所から湯水利用側に
まで延長することは、設備レイアウト上の支障を多く伴
う。また、湯水利用側への配管途中で自然冷却が行われ
易く、熱回収効率が悪くなるという問題もある。However, since the exhaust gas pipe has a larger diameter than the cooling water pipe,
Extending this exhaust gas pipe from the engine installation location to the hot water usage side involves many obstacles in the equipment layout. Further, there is also a problem that natural cooling is likely to be performed in the middle of piping to the hot water utilization side, and heat recovery efficiency is deteriorated.
【０００４】本発明はかかる点に鑑みてなされたもので
あり、その目的とするところは、排気ガス配管から廃熱
を回収して湯水利用部で利用するに当り、冷却水を仲介
する構成とすることにより、排気ガス配管の延設を必要
とせず、設備レイアウト及び熱回収率の面で優れたエン
ジンの廃熱回収装置を提供せんとするものである。The present invention has been made in view of the above points, and an object of the present invention is to interpose cooling water in recovering waste heat from an exhaust gas pipe and using it in a hot water utilization section. By doing so, it is not intended to provide an exhaust gas pipe extension, and to provide an engine waste heat recovery device that is excellent in terms of equipment layout and heat recovery rate.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、請求項１記載の発明は、エンジンの排気ガス配管か
ら廃熱を回収する廃熱回収装置として、上記排気ガス配
管のうち、少なくともエンジン接続側の排気マニホール
ドに設けられ、排気ガスと冷却水との間で熱交換を行う
ガス・水熱交換器と、該ガス・水熱交換器に対し冷却水
を循還させる冷却水循還配管と、該冷却水循還配管と湯
水利用部に接続された湯水配管との間で熱交換を行う水
・水熱交換器とを備える構成とする。In order to achieve the above object, the invention according to claim 1 is a waste heat recovery device for recovering waste heat from an exhaust gas pipe of an engine, and at least the engine of the exhaust gas pipe is A gas / water heat exchanger for exchanging heat between the exhaust gas and the cooling water, provided in the exhaust manifold on the connection side, and a cooling water circulation pipe for circulating the cooling water to the gas / water heat exchanger. And a water / water heat exchanger for exchanging heat between the cooling water circulation pipe and the hot and cold water pipe connected to the hot and cold water utilization part.
【０００６】請求項２記載の発明は、請求項１記載の発
明に従属するものであって、上記冷却水循還配管を、エ
ンジンの冷却水配管と同一の循還通路で構成する。The invention according to claim 2 is dependent on the invention according to claim 1, wherein the cooling water circulation pipe is formed of the same circulation passage as the cooling water pipe of the engine.
【０００７】請求項３記載の発明は、請求項１記載の発
明に従属するものであって、上記冷却水循還配管を、エ
ンジンの冷却水配管と別の通路で構成する一方、上記水
・水熱交換器を、上記冷却水配管と湯水配管との間でも
熱交換を行うように設けるものである。The invention according to claim 3 is dependent on the invention according to claim 1, wherein the cooling water circulation pipe is constituted by a passage different from the cooling water pipe of the engine, and The water heat exchanger is provided so as to exchange heat between the cooling water pipe and the hot water pipe.
【０００８】[0008]
【作用】上記の構成により、請求項１記載の発明では、
冷却水循還配管内を冷却水が循還するとき、排気ガス配
管のエンジン接続側の排気マニホールド等に設けられた
ガス・水熱交換器では排気ガスと冷却水との間で熱交換
が行われる。この熱交換で加熱された湯水は、湯水利用
部側に設けられた水・水熱交換器に送られ、該水・水熱
交換器で湯水配管内の水との間で熱交換が行われる。そ
して、この熱交換により冷却された冷却水循還配管内の
水は、冷却水として上記ガス・水熱交換器へ送られる。
一方、熱交換により加熱された湯水配管内の水は、湯水
として湯水利用部に送られる。With the above construction, in the invention according to claim 1,
When the cooling water circulates in the cooling water circulation pipe, heat is exchanged between the exhaust gas and the cooling water in the gas / water heat exchanger provided in the exhaust manifold on the engine connection side of the exhaust gas pipe. Be seen. The hot water heated by this heat exchange is sent to the water / water heat exchanger provided on the hot water utilization part side, and heat exchange is performed with the water in the hot water pipe by the water / water heat exchanger. .. The water in the cooling water circulation pipe cooled by this heat exchange is sent to the gas / water heat exchanger as cooling water.
On the other hand, the water in the hot and cold water piping heated by heat exchange is sent to the hot and cold water utilization section as hot and cold water.
【０００９】請求項２記載の発明では、冷却水循還配管
内の冷却水が上記ガス・水熱交換器と共にエンジンでも
加熱され、しかる後、上記水・水熱交換器で湯水配管内
の水と熱交換されることにより、排気ガス及びエンジン
冷却水からの廃熱回収が同時に行われる。According to the second aspect of the present invention, the cooling water in the cooling water circulation pipe is heated by the engine together with the gas / water heat exchanger, and thereafter, the water in the hot / cold water pipe is heated by the water / water heat exchanger. By exchanging heat with the exhaust heat, the waste heat is recovered from the exhaust gas and the engine cooling water at the same time.
【００１０】請求項３記載の発明では、上記水・水熱交
換器において、冷却水循還配管と湯水配管との間での熱
交換と同時にエンジン冷却水配管と湯水配管との間での
熱交換も行われ、排気ガス及びエンジン冷却水からの廃
熱回収が共に行われる。According to the third aspect of the present invention, in the water / water heat exchanger, heat is exchanged between the cooling water circulation pipe and the hot water pipe, and at the same time, heat is exchanged between the engine cooling water pipe and the hot water pipe. Exchange is also performed, and waste heat is recovered from both exhaust gas and engine cooling water.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の第１実施例に係わる廃熱回
収装置の概略構成を示し、１は発電機２を駆動するディ
ーゼルエンジンであって、該ディーゼルエンジン１に
は、該エンジン１内の冷却水通路３とループを形成する
冷却水配管４が接続されている。上記冷却水通路３の途
中にはエンジン動力により駆動されるエンジンポンプ５
が設けられているとともに、上記冷却水配管４の途中に
は、水・ガス分離室６ａを有するファン６ｂ付きのラジ
エータ６が設けられていて、上記エンジンポンプ５の作
動により上記冷却水通路３内及び冷却水配管４内に冷却
水を循還させ、エンジン１を冷却するように構成されて
いる。FIG. 1 shows a schematic construction of a waste heat recovery system according to a first embodiment of the present invention, in which 1 is a diesel engine for driving a generator 2, and the diesel engine 1 is provided in the engine 1. The cooling water passage 3 and the cooling water pipe 4 forming a loop are connected. An engine pump 5 driven by engine power is provided in the middle of the cooling water passage 3.
And a radiator 6 with a fan 6b having a water / gas separation chamber 6a is provided in the middle of the cooling water pipe 4, and the inside of the cooling water passage 3 is operated by the operation of the engine pump 5. The cooling water is circulated in the cooling water pipe 4 to cool the engine 1.
【００１３】また、７は上記エンジン１の排気ガス配管
であって、該排気ガス配管７の一端部（エンジン側端
部）は、エンジンの各気筒から排出される排気ガスを集
める排気マニホールド８で構成され、他端部は、図示し
ないサイレンサー等を通した後大気に開放されている。
９は上記排気マニホールド８に設けられた第１のガス・
水熱交換器、１０は排気ガス配管７の途中に設けられた
第２のガス・水熱交換器であって、上記両熱交換器は、
共に排気ガス配管７（排気マニホールド８）内の排気ガ
スと後述する冷却水循還配管１１内の冷却水との間で熱
交換を行うものである。Reference numeral 7 denotes an exhaust gas pipe of the engine 1, and one end portion (end portion on the engine side) of the exhaust gas pipe 7 is an exhaust manifold 8 for collecting exhaust gas exhausted from each cylinder of the engine. The other end is opened to the atmosphere after passing through a silencer or the like (not shown).
9 is the first gas provided in the exhaust manifold 8
The water heat exchanger 10 is a second gas / water heat exchanger provided in the middle of the exhaust gas pipe 7, and both heat exchangers are:
Both are for exchanging heat between the exhaust gas in the exhaust gas pipe 7 (exhaust manifold 8) and the cooling water in the cooling water circulation pipe 11 described later.
【００１４】さらに、１１は上記第１及び第２のガス・
水熱交換器に対し冷却水を循還させる冷却水循還配管で
あって、該冷却水循還配管１１は、エンジン設置側と湯
水利用部側との間に跨がって配設されており、その途中
には冷却水を循還させるための循還ポンプ１２が設けら
れている。１３は上記冷却水循還配管１１の湯水利用部
側に設けられた水・水熱交換器であって、該熱交換器１
３は、冷却水循還配管１１内の水（熱湯）と給湯装置等
の湯水利用部（図示せず）に接続された湯水配管１４内
の水（冷水）との間で熱交換を行うものである。Further, 11 is the first and second gases
A cooling water circulation pipe for circulating cooling water to a water heat exchanger, wherein the cooling water circulation pipe 11 is arranged across the engine installation side and the hot water utilization section side. A circulation pump 12 for circulating the cooling water is provided in the middle thereof. Reference numeral 13 denotes a water / water heat exchanger provided on the hot water utilization portion side of the cooling water circulation pipe 11, and the heat exchanger 1
3 performs heat exchange between the water (hot water) in the cooling water circulation pipe 11 and the water (cold water) in the hot and cold water pipe 14 connected to a hot water utilization unit (not shown) such as a water heater. Is.
【００１５】尚、１６はラジエータ６の水・ガス分離室
６ａに接続されたサブタンク、１７は冷却水循還配管１
１の水・水熱交換器１３近傍に設けられた水注入部であ
る。Reference numeral 16 is a sub-tank connected to the water / gas separation chamber 6a of the radiator 6, and 17 is a cooling water circulation pipe 1
1 is a water injection part provided in the vicinity of the water / water heat exchanger 13.
【００１６】次に、上記第１実施例の作用・効果につい
て説明するに、循還ポンプ１２の作動により冷却水循還
配管１１内を冷却水が循還するとき、排気ガス配管７の
排気マニホールド８等に設けられた第１及び第２のガス
・水熱交換器９，１０ではそれぞれ排気ガス配管７内の
排気ガスと循還配管１１内の冷却水との間で熱交換が行
われる。この熱交換で加熱された湯水は、湯水利用部側
に設けられた水・水熱交換器１３に送られ、該水・水熱
交換器１３で湯水配管１４内の水との間で熱交換が行わ
れる。そして、この熱交換により冷却された冷却水循還
配管１１内の水は、冷却水として上記ガス・水熱交換器
９，１０に送られる。一方、熱交換により加熱された湯
水配管１４内の水は、湯水として湯水利用部に送られ、
その利用に供せられる。Next, the operation and effect of the first embodiment will be described. When the cooling water circulates in the cooling water circulation pipe 11 by the operation of the circulation pump 12, the exhaust manifold of the exhaust gas pipe 7 In the first and second gas / water heat exchangers 9 and 10 provided in 8 and the like, heat is exchanged between the exhaust gas in the exhaust gas pipe 7 and the cooling water in the circulation pipe 11, respectively. The hot water heated by this heat exchange is sent to the water / water heat exchanger 13 provided on the hot water utilization section side, and the water / water heat exchanger 13 exchanges heat with the water in the hot water pipe 14. Is done. The water in the cooling water circulation pipe 11 cooled by this heat exchange is sent to the gas / water heat exchangers 9 and 10 as cooling water. On the other hand, the water in the hot and cold water pipe 14 heated by heat exchange is sent to the hot and cold water utilization section as hot water.
It is offered for the use.
【００１７】このような廃熱回収システムによる場合、
エンジン１の設置個所と湯水利用部側との間には、排気
ガス配管７に比べて小径で配管上のレイアウトや作業等
が容易な冷却水循還配管１１を配管するだけで足りるの
で、設備レイアウトの自由度及び作業容易性を高めるこ
とができる。また、冷却水循還配管１１での放熱は、排
気ガス配管７のそれと比較して、配管の径ないし表面積
の差異等からかなり少なくなるので、その分熱回収率を
高めることができる。In the case of such a waste heat recovery system,
Between the installation location of the engine 1 and the hot water usage section side, it is sufficient to install a cooling water circulation pipe 11 which has a smaller diameter than the exhaust gas pipe 7 and is easy to layout and work on the pipe. The degree of freedom of layout and workability can be improved. Further, the heat radiation in the cooling water circulation pipe 11 is considerably smaller than that in the exhaust gas pipe 7 due to the difference in the diameter or surface area of the pipe, so that the heat recovery rate can be increased accordingly.
【００１８】図２は本発明の第２実施例に係わる廃熱回
収装置を示す。この第２実施例の場合は、エンジン１の
冷却水配管４からも廃熱を回収するようになっている。
すなわち、上記冷却水配管４は、冷却水循還配管１１と
同様にエンジン設置側と湯水利用部側との間に跨がって
設けられているとともに、この冷却水配管４及び冷却水
循還配管１１は、共に湯水利用部側に設けられた一つの
水・水熱交換器２１に接続され、該熱交換器２１におい
て各々湯水配管２２との間で熱交換を行うようになって
いる。尚、その他の構成は、第１実施例の場合と同じで
あるので、同一部材には同一符号を付してその説明は省
略する。FIG. 2 shows a waste heat recovery system according to the second embodiment of the present invention. In the case of the second embodiment, the waste heat is also recovered from the cooling water pipe 4 of the engine 1.
That is, the cooling water pipe 4 is provided so as to straddle between the engine installation side and the hot water utilization unit side, like the cooling water circulation pipe 11, and the cooling water pipe 4 and the cooling water circulation are provided. The pipes 11 are both connected to one water / water heat exchanger 21 provided on the hot water utilization section side, and heat is exchanged between each of the heat exchangers 21 and the hot and cold water pipes 22. Since the other structure is the same as that of the first embodiment, the same members are designated by the same reference numerals and the description thereof is omitted.
【００１９】そして、上記第２実施例においては、エン
ジン１の冷却水配管４及び排気ガス配管７の両方から廃
熱を回収して湯水利用部で利用することができる上、装
置全体で水・水熱交換器２１が一つだけで足りるので、
設備コストの低廉化等を図ることもできる。Further, in the second embodiment, waste heat can be recovered from both the cooling water pipe 4 and the exhaust gas pipe 7 of the engine 1 and used in the hot and cold water utilization section, and the entire system Since only one water heat exchanger 21 is required,
It is also possible to reduce equipment costs.
【００２０】図３は本発明の第３実施例に係わる廃熱回
収装置を示す。この第３実施例の場合、エンジン１の排
気ガス配管７から熱を回収する冷却水循還配管３１は、
エンジン１内の冷却水通路３を通るように配管されてい
て、エンジン１の冷却水配管をも構成している。尚、そ
の他の構成は、第１実施例の場合と同じであり、同一部
材には同一符号を付してその説明は省略する。FIG. 3 shows a waste heat recovery system according to the third embodiment of the present invention. In the case of the third embodiment, the cooling water circulation pipe 31 for recovering heat from the exhaust gas pipe 7 of the engine 1 is
It is arranged so as to pass through the cooling water passage 3 in the engine 1 and also constitutes the cooling water piping of the engine 1. The rest of the configuration is the same as that of the first embodiment, and the same members are designated by the same reference numerals and the description thereof is omitted.
【００２１】そして、上記第３実施例においては、冷却
水循還配管３１内を冷却水が循還するとき、この冷却水
は、エンジン１の冷却水通路３内を通る際にエンジン１
から熱を吸収するとともに、第１及び第２のガス・水熱
交換器９，１０でそれぞれ排気ガス配管７内の排気ガス
との間で熱交換をすることにより加熱される。この加熱
された水（湯水）は、水・水熱交換器１３で湯水配管１
４内の水（冷水）との間で熱交換が行われる。In the third embodiment, when the cooling water circulates in the cooling water circulation pipe 31, the cooling water circulates in the cooling water passage 3 of the engine 1 when the cooling water circulates in the engine 1.
It is heated by absorbing heat from the exhaust gas and exchanging heat with the exhaust gas in the exhaust gas pipe 7 by the first and second gas / water heat exchangers 9 and 10, respectively. The heated water (hot water) is supplied to the hot water pipe 1 by the water / water heat exchanger 13.
Heat exchange is carried out with the water (cold water) in 4.
【００２２】このような廃熱回収システムによれば、一
つの冷却水循還通路３１でもって排気カズ及びエンジン
冷却水からの廃熱回収を行うことができるので、設備レ
イアウトの自由度を大幅に高めることができ、設備コス
トの低廉化をも図ることができる。According to such a waste heat recovery system, it is possible to recover the waste heat from the exhaust gas and the engine cooling water by using only one cooling water circulation passage 31, so that the degree of freedom in facility layout is greatly increased. It is possible to increase the cost and reduce the equipment cost.
【００２３】尚、上記第１〜第３実施例では、いずれも
排気ガス配管７のエンジン側端部の排気マニホールド８
及びその下流側（大気開放側）にそれぞれガス・水熱交
換器９，１０を設けて、排気ガスからの廃熱回収を行う
ように構成したが、本発明は、排気ガス配管７のうち、
最も高温となる排気マニホールド８にのみガス・水熱交
換器９を設けて、排気ガスからの廃熱回収を行うように
構成してもよい。In each of the first to third embodiments, the exhaust manifold 8 at the engine side end of the exhaust gas pipe 7 is used.
Further, the gas / water heat exchangers 9 and 10 are respectively provided on the downstream side (atmosphere opening side) to recover waste heat from the exhaust gas.
The gas / water heat exchanger 9 may be provided only in the exhaust manifold 8 having the highest temperature to recover the waste heat from the exhaust gas.
【００２４】[0024]
【発明の効果】以上の如く、本発明におけるエンジンの
廃熱回収装置によれば、エンジン設置側と湯水利用部側
との間に冷却水循還配管を介設して、排気ガス配管から
の廃熱を湯水利用部で利用する構成としたことにより、
大径の排気ガスを湯水利用部側にまで延設する必要がな
く、設備レイアウトの自由度を高めることができるとと
もに、熱回収効率を高めることができる。As described above, according to the waste heat recovery system for an engine of the present invention, the cooling water circulation pipe is provided between the engine installation side and the hot water utilization part side, and the exhaust gas pipe By using waste heat in the hot and cold water utilization section,
It is not necessary to extend a large-diameter exhaust gas to the hot and cold water utilization portion side, so that the degree of freedom in equipment layout can be increased and the heat recovery efficiency can be increased.
【００２５】特に、請求項２記載の発明によれば、一つ
の循還通路でもって排気カズ及びエンジン冷却水からの
廃熱回収を行うことができるので、設備レイアウトの自
由度をより高めることができ、また設備コストの低廉化
を図ることができるという効果を併有する。In particular, according to the second aspect of the present invention, the waste heat can be recovered from the exhaust gas and the engine cooling water with only one circulation passage, so that the degree of freedom in equipment layout can be further increased. In addition, it has the effect that the facility cost can be reduced.
【００２６】また、請求項３記載の発明によれば、一つ
の水・水熱交換器で冷却水循還配管及びエンジンの冷却
水配管と湯水配管との間での熱交換を共に行うことがで
きるので、設備コストの低廉化を図ることができるとい
う効果を併有する。According to the third aspect of the invention, one water / water heat exchanger can perform heat exchange between the cooling water circulation pipe and the cooling water pipe of the engine and the hot water pipe together. Therefore, there is an effect that the facility cost can be reduced.
【図１】本発明の第１実施例に係わる廃熱回収装置の概
略構成図である。FIG. 1 is a schematic configuration diagram of a waste heat recovery apparatus according to a first embodiment of the present invention.
【図２】第２実施例を示す図１相当図である。FIG. 2 is a view, corresponding to FIG. 1, showing a second embodiment.
【図３】第３実施例を示す図１相当図である。FIG. 3 is a view corresponding to FIG. 1 showing a third embodiment.
１ ディーゼルエンジン ４ 冷却水配管 ７ 排気ガス配管 ８ 排気マニホールド ９，１０ ガス・水熱交換器 １１，３１ 冷却水循還配管 １３，２１ 水・水熱交換器 １４，２２ 湯水配管 1 Diesel engine 4 Cooling water piping 7 Exhaust gas piping 8 Exhaust manifold 9,10 Gas / water heat exchanger 11,31 Cooling water circulation piping 13,21 Water / water heat exchanger 14,22 Hot water piping
Claims (3)
する廃熱回収装置であって、 上記排気ガス配管のうち、少なくともエンジン接続側の
排気マニホールドに設けられ、排気ガスと冷却水との間
で熱交換を行うガス・水熱交換器と、 該ガス・水熱交換器に対し冷却水を循還させる冷却水循
還配管と、 該冷却水循還配管と湯水利用部に接続された湯水配管と
の間で熱交換を行う水・水熱交換器とを備えたことを特
徴とするエンジンの廃熱回収装置。1. A waste heat recovery device for recovering waste heat from an exhaust gas pipe of an engine, which is provided in at least an exhaust manifold on the engine connection side of the exhaust gas pipe, and between the exhaust gas and cooling water. Gas / water heat exchanger for exchanging heat with water, cooling water circulation pipe for circulating cooling water to the gas / water heat exchanger, and hot and cold water connected to the cooling water circulation pipe and the hot and cold water utilization part A waste heat recovery device for an engine, comprising: a water / water heat exchanger that exchanges heat with a pipe.
水配管と同一の循還通路を構成している請求項１記載の
エンジンの廃熱回収装置。2. The waste heat recovery device for an engine according to claim 1, wherein the cooling water circulation pipe constitutes the same circulation passage as the cooling water pipe of the engine.
水配管と別の通路からなり、上記水・水熱交換器は、上
記冷却水配管と湯水配管との間でも熱交換を行うように
設けられている請求項１記載のエンジンの廃熱回収装
置。3. The cooling water circulation pipe comprises a passage separate from the engine cooling water pipe, and the water / water heat exchanger performs heat exchange between the cooling water pipe and the hot water pipe as well. The waste heat recovery device for an engine according to claim 1, which is provided in the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4037769A JPH05231144A (en) | 1992-02-25 | 1992-02-25 | Waste heat recovering device for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4037769A JPH05231144A (en) | 1992-02-25 | 1992-02-25 | Waste heat recovering device for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05231144A true JPH05231144A (en) | 1993-09-07 |
Family
ID=12506678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4037769A Withdrawn JPH05231144A (en) | 1992-02-25 | 1992-02-25 | Waste heat recovering device for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05231144A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8166759B2 (en) | 2006-02-02 | 2012-05-01 | Toyota Jidosha Kabushiki Kaisha | Exhaust heat recovery apparatus |
-
1992
- 1992-02-25 JP JP4037769A patent/JPH05231144A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8166759B2 (en) | 2006-02-02 | 2012-05-01 | Toyota Jidosha Kabushiki Kaisha | Exhaust heat recovery apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990518 |